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Worcester Firefly HD II 50 D type Oil - Boiler Efficiency Ratings

Boiler Efficiency Rating

You can find out the energy efficiency of your boiler by checking its energy rating; you can do this now by selecting the make and model below.

A boiler’s energy rating is an indicator of its efficiency when used within an average domestic household. It's a great benchmark for comparing new boilers and can help you work out how much money you could save on energy bills if you replaced your current boiler with a more efficient model.

For new boiler installations call British Gas Boilers on 0333 230 5216 for a no-obligation quote. Alternatively visit Boiler Guide to request quotes from independent local and regional heating engineers.

Worcester Firefly HD II 50 D type Efficiency

SAP seasonal efficiency65%
Rating bandUnknown


ManufacturerWorcester Boilers
ModelFirefly HD II 50 D type
Fuel TypeOil
Flue TypeOpen
FanNo Fan
Output (kW)14.6 - 14.6
Boiler ID
Manufactured From/ToUnknown - 1985


The Worcester Firefly HD II 50 D type is unrated, this probably means it's obsolete or very old.

The Firefly HD II 50 D type is a Non-Condensing Conventional boiler with a maximum power output of 14.6kw that uses Oil as its fuel source.

Being an Unrated boiler it would be worthwhile replacing it with a higher efficiency 'A' rated boiler.

Similar Worcester Boilers to the Firefly HD II 50 D type
(Non-Condensing Oil Conventional)

Results ordered by efficiency. Some models may be obsolete.

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